Defense Brief Motion Bank

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US HB 4143 119th Congress house

3D Printed Gun Safety Act of 2025

First chamber Not law yet bank: queued

Not law yet. Pending legislation.

Official status checked 2026-10-21 23:46 PT

Bill summary

3D Printed Gun Safety Act of 2025 This bill makes it unlawful to intentionally publish digital instructions that can automatically program a three-dimensional printer or similar device to produce or complete a firearm from an unfinished frame or receiver.

Now vs if chaptered

Now: no federal CAD-distribution ban. If chaptered (or if the Senate twin chapters first): new 922(aa) internet-distribution crime. Confirm enactment before advising.

Defender utility

Same statute as SB 2165 if either twin chapters. Distinguish a still-pending federal CAD-distribution count from already-illegal unlicensed manufacture / state CAD statutes (NJ A 1399; CA AB 1263). Not a current charge.

Who this is for. Federal defenders tracking the House CAD-distribution twin of SB 2165 — pending, not present law; not a California charge.

HB-4143 Federal PMF ghost-gun 3d-print CAD 922(aa) SB-2165-twin not-chaptered AB-1263-peer